Turn Yourself Into A Master Of HVAC
A good HVAC system is a must if you want to remain comfortable in the heat of summer or the depths of winter. However, with so many different options out there, it can be hard to choose the best system. This article will give you the advice you need to make the right decision.
If you do have a good experience with a HVAC product or contractor, let others know. Go online and post a review so that people can easily find out who and what brands to trust. At the same time, you can check reviews online to learn more yourself about what's available.
Before you start calling to find someone to fix your unit, make sure you know the type of system that is installed. Write down what brand your system is along with the model number and, if they're available, maintenance records. This will help you give the new contractor the necessary information.
Clean the debris from outside units often. After a wind or rain storm things may pile up, causing problems with your system. The whole thing can overheat, causing major problems and possibly an enormous expense for you.
If you want to pay for less power use, consider installing an HVAC-specific solar panel system. Such an installation harnesses the power of the sun directly for your heating and air conditioning. Don't worry though; you can have a switch put in that automatically connects to the power grid the days there isn't enough sun.
In the winter, wearing layers can save you a ton of money on your utility bill. If you can install a digital thermostat that makes the house cooler when you're asleep and warmer just before you get up, you can see significant savings on your next bill when it arrives.
Use plants to increase your air conditioner's effectiveness. An AC unit fully shaded by trees and shrubbery can operate up to 10 percent more efficiently. However, do keep spacing in mind. Air flow must not be constricted, and technicians need room to work when they come out to service your unit.
Clean your filters! If you have a window unit air conditioner, there will be a filter right under the grill you can vacuum. If you have a furnace or outdoor units, they will also have filters to be cleaned or replace. A dirty filter can make your unit inefficient or even let it overheat.
Make sure that the HVAC contractor you plan to hire does not use subcontractors to do their work. Many people use this as an excuse to shirk their responsibility in the event that something goes wrong when your system is being worked on. Only allow this if there is a note in the contract about what will happen if there is an issue.
Keep your condensers free of nearby obstructions. Keep plants, fencing, even bushes back and away from the unit. Two feet is a good minimum distance it should have from anything, including walls, but the more space you give it to breathe, the better it will work and the less likely it will be to fail.
Improve the efficiency of your air conditioning by installing ceiling fans. Change the airflow direction of the ceiling fans. During the summer, the blades should move in a counter-clockwise direction. During the winter, the blades should move clockwise to help move the hot air in the ceiling down into the room.
If you want to seriously extend the life of your HVAC system, as well as cut down your overall power bill, install ceiling fans in commonly used warm season rooms. Energy-star certified ceiling fans can sometimes cut your HVAC use in half. However, you won't physically notice a difference in temperature.
HVAC maintenance isn't terribly difficult, especially if you have some helpful advice like that found in the tips above. Without going over the tips, it is very tricky to figure out an HVAC system on your own. Good luck, you'll more info do fine!
Ancient 'air-conditioning' cools building sustainably
How did buildings keep cool before the invention of air conditioning? As architects consider how to reduce the energy demands of new builds, some are turning to the past for simple, low-tech solutions.
At the height of summer, in the sweltering industrial suburbs of Jaipur, Rajasthan in north-west India, the Pearl Academy of Fashion remains 20 degrees cooler inside than out -- by drawing on Rajasthan's ancient architecture.
While the exterior appears very much in keeping with the trends of contemporary design, at the base of the building is a vast pool of water -- a cooling concept taken directly from the stepwell structures developed locally over 1,500 years ago to provide refuge from the desert heat.
Award-winning architect Manit Rastogi, who designed the academy, explains that baoli -- the Hindi word for stepwell -- are bodies of water encased by a descending set of steps.
"When water evaporates in heat, it immediately brings down the temperature of the space around it," he says.
While traditional stepwells often go many stories below ground level, Rastogi's go down just four meters. However, the effect is the same and -- like the ancient Mughal palaces before it -- the academy enjoys its own microclimate.
Read more from Road to Rio: The slums of Mumbai: A model of urban sustainability?
Rastogi wonders: "How did they think up something so elaborate and yet so simple in its basic philosophy?
"How do you begin to think that you can dig into the ground and use the earth as a heat sink, have access to water, put a pavilion into it so that its comfortable through the year? It takes a lot of technology for us to think up something that simple now."
But it's not just the stepwells that are involved in this process of "passive cooling" -- the general term applied to technologies or design features that cool buildings without power consumption.
The whole building is raised above the ground on pillars, creating an airy and shaded pavilion that is used as a recreation and exhibition space. Here, according to Rastogi, the walls are made from a heat-absorbing material that creates a "thermal bank" -- so the warmth is slowly released at night when the temperature drops.
Centuries ago, latticed screens or "jaali" filtered direct sunlight into the palaces. The effect was decorative and helped reduce the heat. Likewise at The Pearl Academy, a latticed concrete screen runs the length of the building and provides a cooling outer skin.
"We've been able to demonstrate that good green building is not only cheaper to run; it's not only more comfortable to live in -- it's also cheaper to build," says Rastogi.
The success of the academy's eco-design has had an impact. Regulations -- based on these passive cooling techniques -- were introduced last year for all new Indian government buildings.
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